蒙菊 meng ju

Dendranthema mongolicum (Y. Ling) Tzvelev.

Herbs, perennial, 20-30 cm tall. Stems fascicled, branched from middle or base, lower part purple-red, sparsely pilose. Lower and middle stem leaves: petiole 1.5-2 cm; leaf blade broadly ovate, subrhomboid, or elliptic, 1-2 × 1.5-1.8 cm, 2-pinnatisect or inconspicuously bipalmate-pinnatisect, both surfaces glabrous or sparsely pubescent; primary lateral segments 1- or 2-paired; ultimate segments triangular, apex aristate-acute. Upper stem leaves narrowly elliptic, pinnatifid; lateral lobes 2-4(-8)-paired. Synflorescence a flat-topped cyme. Capitula (1 or)2-7, 3-4.5 cm in diam. Involucres cup-shaped, 1-2 cm in diam.; phyllaries in 5 rows, abaxially glabrous, scarious margin white, outer ones leaflike, narrowly elliptic, 1-1.3 cm, pinnatilobed or pinnatifid, middle and inner ones narrowly elliptic, ca. 8 mm. Ray floret lamina pink or white, 15-20 mm. Achenes ca. 2 mm. Fl. and fr. Aug-Sep. 2n = 36, 54, 72.

Rocky mountain slopes; 1500-2500 m. Nei Mongol [Mongolia, Russia].